Given the lack of evidence, the typo theory remains strongest. But the beauty of internet language is that a typo can become a new word. If enough people write “raf” meaning “love,” it could eventually enter dictionaries as a playful variant. We’ve seen similar evolutions: “pwn” from “own,” “teh” from “the,” “snek” from “snake.” could be next.
It sounds like you're quoting a variation of the famous "The Wicked Witch of the East, Bro!" meme . This viral argument originally gained fame for its intense back-and-forth about whether the character Glinda from The Wizard of Oz was a witch or a princess. i raf you big sister is a witch
She had been to the elsewhere and back. She had made friends with things that kept watch over thresholds and bartered for knowledge not in our tongues. She had seen the ledger of the world—the one that counted the soft things we trade without thinking—and she had seen how fast it grows when people try to make commerce of compassion. Given the lack of evidence, the typo theory